You are given a passage. Using the information present in the passage, you need to classify it into one of the 10 topics: 0 - 'Society & Culture', 1 - 'Science & Mathematics', 2 - 'Health', 3 - 'Education & Reference', 4 - 'Computers & Internet', 5 - 'Sports', 6 - 'Business & Finance', 7 - 'Entertainment & Music', 8 - 'Family & Relationships', 9 - 'Politics & Government'.

[Q]: Depends on your teeth.  I used Crest Whitestrips for a time, and they worked really well (I definitely noticed a difference in the whiteness of my teeth).  However, they irritated my gums to the point where my dentist told me to stop using them and they made my teeth super sensitive to cold and hot (i.e. eating ice cream or drinking tea was painful).  I've never done the laser whitening/Brite Smile, but I've seen those treatments work wonders for folks who have (they are not cheap though).  I would advise trying the strips (making sure to abide by the time guidelines) - you will like the effects of them (they do really work) and if they don't bother your teeth/gums, you should be able to continue use.
[A]: 2


[Q]: Hitchcock directed, produced and wrote some of the greatest suspense films of all time. His career spanned from the 1920's to the 1970's. His classic films include "Psycho", "Rear Window", "Vertigo", "North by Northwest", and "The Birds". He also hosted two groundbreaking suspense anthology series on television. \n\nIt would be difficult to overstate the influence Hitchcock had on the industry. His showmanship, his cinematography and his approach to suspense are felt to this day, recently in Gus Van Sant's shot-by-shot recreation of "Psycho".
[A]: 7


[Q]: 1: Kiss, 2: Making out(hand), 3:Oral sex(mouth), Homerun: Sex
[A]:
8


